Kirchhoff’s laws are one of the fundamental laws that find applications in electrical engineering for formulating the circuits. There are two laws that make up the Kirchhoff’s law and they are:
- Kirchhoff’s Current Law (KCL): KCL is also known as Kirchhoff’s first law or junction rule. The principle of this law is to conserve the electric charge. The law states that the amount of current flowing into a node is equal to the sum of currents flowing out of it. For performing the nodal analysis in Ohm’s law, KCL is used.
- Kirchhoff’s Voltage Law (KVL): KVL is also known as Kirchhoff’s second law or loop law. The principle of this law is to conserve energy. The law states that the sum of voltages is in a closed-loop is zero. The total amount of energy gained is equal to the energy lost per unit charge.
VAB + VBC + VCD + VDA = 0